CN1347584A - Voltage/current regulator and method for charging battery - Google Patents
Voltage/current regulator and method for charging battery Download PDFInfo
- Publication number
- CN1347584A CN1347584A CN00806184A CN00806184A CN1347584A CN 1347584 A CN1347584 A CN 1347584A CN 00806184 A CN00806184 A CN 00806184A CN 00806184 A CN00806184 A CN 00806184A CN 1347584 A CN1347584 A CN 1347584A
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- China
- Prior art keywords
- temperature
- battery
- current
- voltage
- power dissipation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
A voltage/current regulator regulates charging of a rechargeable battery in a portable apparatus that includes a transistor and a controller means coupled to the transistor for controlling the charging current to the battery. The controller determines the power dissipation in the transistor of the regulator. If the power dissipation is above a maximum allowed power dissipation, the controller decreases the charging current by a particular current step. Otherwise, the controller determines if the power dissipation will exceed the maximum allowed power dissipation if the charging current is increased by the current step. If not, the controller increases the charging current by the current step.
Description
Invention field
The present invention relates generally to voltage/current regulator and the method that is used for controlling to the rechargeable battery charging of portable electron device.
The description of prior art
The rechargeable battery that has charged is used to provide electric current so that drive various electrical equipment, such as the industry and the electrical equipment of consumer applications, comprise portable telephone device or other similar electronic installations.But, after battery is discharged, need charge to it.Battery charge generally is meant suitable electric current is added in the regular hour on the battery.
Required charging current depends on rechargeable battery or the battery pack of using which kind of type, and for the rechargeable battery of some type, in charging process, current value must change.Therefore, use charging procedure so that the electric current between the control charge period.
Lithium-battery (or Li-battery) is a battery commonly used in the said apparatus, because it is in light weight, voltage is high, energy density is high, flash-over characteristic is level and smooth and shelf life is long etc.But, in some stage in the charge cycle of Li-battery, need have the linear regulation of charging current.Therefore, come Control current, and at conditioning period, this transistor has the voltage drop from drain-to-source with transistor.Therefore, in described transistor, produce the heat and the power that dissipated.
Because the restriction of cost and board space needs to use as far as possible little transistor.But small transistor can only be dealt with littler power consumption.Therefore, must be provided with electric current lowlyer, so that comprise all situations about temperature, voltage level and charging current.But, this means that in many cases, electric current is unnecessarily low, causes the longer charging interval.
Another possibility is for general case, adds higher electric current so that reduce the charging interval.But in some cases, electric current is too high, cause in the transistor and phone in high temperature, make to make the user of phone uncomfortable in some cases, and reduced the transistorized life-span.
General introduction
Therefore, an object of the present invention is to provide a kind of voltage/current regulator and the method that overcomes battery charge the problems referred to above, that be used for mancarried device.
This uses according to voltage/current regulator device of the present invention and realizes, controls this device and consumes constant power, wherein, in the charging current transistor in device, adopts the maximum of considering power consumption and temperature in the device to fill electric current perhaps.
The invention has the advantages that, make charging current dynamically adapt to the temperature of actual input voltage and phone and inside battery.Therefore, even never surpass maximum dissipation, also always can obtain the minimum charging interval.
In addition, do not have unusual temperature to raise in phone, this is particularly important for very small-sized phone design, and the little increase of temperature is that the user can notice wherein even in the phone.Generally speaking, advantage of the present invention is to make the temperature that is caused by charging raise as much as possible little.
Brief description
In order to illustrate in greater detail the present invention and advantages and features of the invention, in the detailed description of following most preferred embodiment with reference to following accompanying drawing, in the accompanying drawing:
Fig. 1 is the illustrative block diagram that comprises according to the charging environment of voltage/current regulator of the present invention, and
Fig. 2 is the flow chart of explanation according to the embodiment of voltage/current regulator method therefor of the present invention.
Detailed description of the present invention
With reference to Fig. 1, be connected with external charger 3 with the rechargeable battery 2 that will charge according to voltage/current regulator 1 of the present invention.
Voltage/current regulator 1 comprises the first terminal 4 of the corresponding the first terminal 5 that is used to be connected to charger 3.
And adjuster 1 comprises the transistor 6 that is used to control charging current.Transistorized source electrode 7 with source voltage DCIO is connected to the first terminal 8 and the above-mentioned terminal 4 of the control device 9 regulated of being used to charge.Second terminal 10 of control device 9 is connected to the grid 11 of transistor 6.Transistor drain 12 with drain voltage VBAT is connected to the 3rd terminal 13 of control device 9 and first end 14 of impedance 15.Second end 16 of impedance is connected to the 4th terminal 17 of control device 9, and is connected to the first terminal 18 of battery 2 via second terminal 19 of adjuster 1.Battery 2 also is connected to ground through the 3rd terminal 22 of its second terminal 21 and adjuster 1.
In according to method of the present invention, in step 201, control device 9 is determined instantaneous power consumption Pdiss in the transistor 6 by Pdiss=Icharge (DCIO-VBAT).Pmax is the maximum Pdiss that allows.In step 202, detect Pdiss and whether be higher than Pmax, if, then in step 203, make Icharge reduce Istep, wherein Istep is increment size/decrement value of Icharge.
If judge that in step 202 Pdiss is lower than Pmax, two alternatives are arranged, perhaps make Icharge increase Istep, perhaps Icharge does not change.
In step 203 ' in specify interim parameter N ewPdiss be (Icharge+Istep) (DCIO-VBAT).Then, whether in step 204, check NewPdiss＜Pmax, if, then in step 205, carry out first alternative, that is, make Icharge increase Istep.Otherwise, do not change Icharge.
And in the later case,, just surpassed Pmax if Icharge has increased Istep.
Refer again to Fig. 1, adjuster 1 is arranged on electronic installation 23 as in mobile phone, personal organizers, handheld computer or other the similar battery powered devices.When determining Pmax, also consider in the device 23 and battery 2 in temperature.Come detected temperatures by the temp sensor device 24 that links to each other with control device 9.First sensor device 24 is arranged in the device 23 so that the temperature in the checkout gear, and it is connected to five terminal 25 of adjuster 1 via terminal 26, in order to send corresponding temperature signal to control device 9.
And in another case, temperature is very low and satisfy customer requirements.When temperature is reduced to another value Tmin that is set to lowest temperature when following, higher Pmax is acceptable, therefore, can increase Pmax.Thus, if judge that in step 207 temperature just is lower than the upper limit, process proceeds to step 209, in step 209, judges whether temperature is lower than or equals Tmin.If then in step 210, make Pmax increase Pstep.Therefore, the temperature in the consideration device is adjusted maximum power dissipation.
On by the timer-operated fixed time interval in the control device 9, carry out the adjustment process that comprises that temperature detection, source electrode and drain voltage are measured and required electric current is adjusted.Finish in time interval of change of charging current with the peak frequency of control guaranteeing, do not carry out the electric current adjustment.In this embodiment of the present invention, this realizes by the timer delayer in step 211.
Though provided the features and advantages of the present invention in the description in front,, obviously, open only is illustrative, can make the variation on the details in by the scope of the pointed principle of the present invention of the broad sense of claims.
For example, in alternative embodiment of the present invention, only a temperature device is set for the temperature survey in the device.
Claims (8)
1. the voltage/current regulator (1) of the charging of a rechargeable battery (2) that is used for adjusting mancarried device (23), the control device (9) that it comprises transistor (6) and is connected, is used to control the charging current of described battery (2) with described transistor (6) is characterized in that: described control device (9) can:
Determine the power dissipation in the described transistor (6) of described adjuster (1),
Determine whether described power dissipation is higher than the maximum power dissipation that allows,
If, then described charging current is reduced certain specific currents step-length,
If not, if then judgement makes described charging current increase described electric current step-length, whether described power dissipation can surpass the described maximum power dissipation that allows.
If not, then make described charging current increase described electric current step-length.
2. the voltage/current regulator of claim 1, it is characterized in that described control device (9) can:
Detect the temperature in described device (23) and/or the described battery (2),
Judge the maximum allowable temperature limit whether described temperature is higher than or equals to be scheduled to,
If then described maximum allowable power being dissipated reduces specific power step size, so that reduce the heat that discharges in the described device,
If not, then judge the minimum temperature limit whether described temperature is lower than or equals to be scheduled to, if described maximum allowable power is dissipated increases described power step size.
3. battery powered electronic installation, it comprises the device of the charging that is used to adjust rechargeable battery (2), it is characterized in that, the described device that is used for adjusting charging is any one voltage/current regulator according to aforesaid claim.
4. the battery powered electronic installation of claim 3 is characterized in that: be arranged in the described device and be connected to temp sensor device (24) described control device (9), that be used for detecting the temperature of described device (23) and send corresponding temperature indication signal to described control device (9).
5. battery (2) that uses for the described electronic installation of claim 3 or 4 is characterized in that: described battery (2) comprises the temp sensor device (27) of the temperature that is used to indicate described battery (2) and is connected to described sensor device (27) and is connected to described control device (9), is used for sending to described control device (9) terminal (29) of corresponding temperature signal.
6. method that the voltage/current that is used for voltage/current regulator (1) is adjusted, described voltage/current regulator (1) comprises the transistor (6) that is used for the described charging current of the described adjuster of control (1) between the charge period of mancarried device (23) battery (2), it is characterized in that the following step:
Determine the power dissipation of the described transistor (6) of described adjuster (1),
Determine whether described power dissipation is higher than the maximum power dissipation (202) that allows, and
If, then described charging current is reduced particular current step-length (203),
If not, if then judge described charging current increased the power dissipation (203 ', 204) whether described electric current step-length, described power dissipation can surpass described maximum permission, and
If not, then described charging current is increased described electric current step-length (205).
7. the method for claim 6 is characterized in that further comprising the steps of:
Detect the temperature (206) in the described device,
Judge the maximum allowable temperature (207) whether described temperature is higher than or equals to be scheduled to,
If then described maximum allowable power being dissipated reduces specific power step size (208), so that reduce the heat that discharges in the described device,
If not, judge then whether described temperature is lower than or equals minimum temperature, if described maximum allowable power is dissipated increases described power step size (209).
8. claim 6 or 7 method is characterized in that: comprise that in designated time intervals temperature detection, source electrode and drain voltage are measured and the adjustment of the required adjustment of described electric current is handled.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE99013336 | 1999-04-14 | ||
| SE9901333A SE9901333D0 (en) | 1999-04-14 | 1999-04-14 | A voltage / current regulator apparatus and method for battery charging |
| SE9901333-6 | 1999-04-14 | ||
| SE9903672-5 | 1999-10-13 | ||
| SE9903672A SE522717C2 (en) | 1999-04-14 | 1999-10-13 | Voltage and current regulator for controlling the charge of a rechargeable battery in a portable electronic device |
| SE99036725 | 1999-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1347584A true CN1347584A (en) | 2002-05-01 |
| CN100409534C CN100409534C (en) | 2008-08-06 |
Family
ID=26663553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00806184XA Expired - Fee Related CN100409534C (en) | 1999-04-14 | 2000-03-29 | Voltage/current regulator and method for charging battery |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6229283B1 (en) |
| EP (1) | EP1201018A1 (en) |
| JP (1) | JP4249398B2 (en) |
| CN (1) | CN100409534C (en) |
| AU (1) | AU4442400A (en) |
| HK (1) | HK1046193B (en) |
| MY (1) | MY120268A (en) |
| SE (1) | SE522717C2 (en) |
| TR (1) | TR200102925T2 (en) |
| WO (1) | WO2000062398A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104335446A (en) * | 2013-06-03 | 2015-02-04 | 联发科技股份有限公司 | Portable device capable of controlling output characteristics of adaptor, and corresponding method |
| CN106877444A (en) * | 2017-03-20 | 2017-06-20 | 惠州Tcl移动通信有限公司 | A kind of vehicle-mounted charge control method and system based on mobile terminal |
| CN111525201A (en) * | 2020-04-28 | 2020-08-11 | 江西凯马百路佳客车有限公司 | Charging control method for new energy vehicle assembled with lithium iron phosphate battery |
| CN113054696A (en) * | 2019-12-27 | 2021-06-29 | 奥特润株式会社 | Vehicle battery charging system |
| CN113541276A (en) * | 2021-09-15 | 2021-10-22 | 深圳市沃特沃德信息有限公司 | Charging self-adjusting method and device and computer equipment |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7336464B1 (en) * | 2003-08-28 | 2008-02-26 | National Semiconductor Corporation | Power limiting circuit |
| JP2006115654A (en) | 2004-10-18 | 2006-04-27 | Nec Corp | Charging control circuit, electronic apparatus therewith and charging control method |
| JP2006340505A (en) * | 2005-06-02 | 2006-12-14 | Matsushita Electric Ind Co Ltd | Charger |
| US7737665B2 (en) * | 2005-06-10 | 2010-06-15 | Agere Systems Inc. | Multi-threshold charging of a rechargeable battery |
| DE102005061207B4 (en) * | 2005-12-21 | 2014-01-23 | Austriamicrosystems Ag | Circuit arrangement for power supply and method |
| JP5235371B2 (en) * | 2007-09-28 | 2013-07-10 | ルネサスエレクトロニクス株式会社 | Semiconductor integrated circuit device |
| US8294421B2 (en) * | 2008-09-05 | 2012-10-23 | O2Micro Inc | Cell balancing systems employing transformers |
| US8339108B2 (en) * | 2008-10-09 | 2012-12-25 | 02Micro Inc | Charging systems that control power dissipation in a charging path |
| JP5373446B2 (en) * | 2009-03-27 | 2013-12-18 | パナソニック株式会社 | Protection circuit and battery pack |
| US8710802B2 (en) | 2010-05-14 | 2014-04-29 | Blackberry Limited | Method and apparatus for charging a power pack of a portable electronic device |
| FR2976416B1 (en) * | 2011-06-09 | 2015-01-30 | Accumulateurs Fixes | SYSTEM FOR CONTROLLING THE CHARGE OF A BATTERY |
| WO2013076877A1 (en) * | 2011-11-25 | 2013-05-30 | 株式会社日立製作所 | Storage battery system |
| DE102016107448A1 (en) * | 2016-04-21 | 2017-10-26 | enfas GmbH | Energy storage system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1495523A (en) * | 1974-02-26 | 1977-12-21 | Chloride Group Ltd | Automatic electric battery charging apparatus |
| US4341988A (en) * | 1980-06-25 | 1982-07-27 | Emhart Industries, Inc. | Voltage level detector for battery charger control circuit |
| US4644247A (en) * | 1984-03-09 | 1987-02-17 | Cooper Industries, Inc. | Series pass regulated battery charger with reduced power dissipation |
| US5576609A (en) * | 1995-04-20 | 1996-11-19 | Dell Usa, L.P. | Constant power dissipation control of a linear pass element used for battery charging |
| US5703470A (en) | 1996-05-29 | 1997-12-30 | Motorola, Inc. | Battery charger with power dissipation control |
-
1999
- 1999-10-13 SE SE9903672A patent/SE522717C2/en not_active IP Right Cessation
-
2000
- 2000-03-29 CN CNB00806184XA patent/CN100409534C/en not_active Expired - Fee Related
- 2000-03-29 WO PCT/SE2000/000612 patent/WO2000062398A1/en active Application Filing
- 2000-03-29 AU AU44424/00A patent/AU4442400A/en not_active Abandoned
- 2000-03-29 JP JP2000611358A patent/JP4249398B2/en not_active Expired - Fee Related
- 2000-03-29 TR TR2001/02925T patent/TR200102925T2/en unknown
- 2000-03-29 EP EP00925789A patent/EP1201018A1/en not_active Ceased
- 2000-04-06 US US09/543,898 patent/US6229283B1/en not_active Expired - Lifetime
- 2000-04-13 MY MYPI20001556A patent/MY120268A/en unknown
-
2002
- 2002-10-25 HK HK02107756.7A patent/HK1046193B/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104335446A (en) * | 2013-06-03 | 2015-02-04 | 联发科技股份有限公司 | Portable device capable of controlling output characteristics of adaptor, and corresponding method |
| CN104335446B (en) * | 2013-06-03 | 2017-05-03 | 联发科技股份有限公司 | Portable device capable of controlling output characteristics of adaptor, and corresponding method |
| CN106877444A (en) * | 2017-03-20 | 2017-06-20 | 惠州Tcl移动通信有限公司 | A kind of vehicle-mounted charge control method and system based on mobile terminal |
| CN113054696A (en) * | 2019-12-27 | 2021-06-29 | 奥特润株式会社 | Vehicle battery charging system |
| CN111525201A (en) * | 2020-04-28 | 2020-08-11 | 江西凯马百路佳客车有限公司 | Charging control method for new energy vehicle assembled with lithium iron phosphate battery |
| CN113541276A (en) * | 2021-09-15 | 2021-10-22 | 深圳市沃特沃德信息有限公司 | Charging self-adjusting method and device and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1201018A1 (en) | 2002-05-02 |
| SE522717C2 (en) | 2004-03-02 |
| JP2002542748A (en) | 2002-12-10 |
| SE9903672L (en) | 2000-10-15 |
| SE9903672D0 (en) | 1999-10-13 |
| JP4249398B2 (en) | 2009-04-02 |
| TR200102925T2 (en) | 2002-04-22 |
| HK1046193A1 (en) | 2002-12-27 |
| MY120268A (en) | 2005-09-30 |
| CN100409534C (en) | 2008-08-06 |
| HK1046193B (en) | 2009-05-15 |
| US6229283B1 (en) | 2001-05-08 |
| AU4442400A (en) | 2000-11-14 |
| WO2000062398A1 (en) | 2000-10-19 |
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Owner name: CLUSTER CO., LTD. Free format text: FORMER OWNER: TELEFONAKTIEBOLAGET LM ERICSSON (SE) S-126 25 STOCKHOLM, SWEDEN Effective date: 20150427 Owner name: OPTIS WIRELESS TECHNOLOGY LLC Free format text: FORMER OWNER: CLUSTER CO., LTD. Effective date: 20150427 |
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Effective date of registration: 20150427 Address after: Texas, USA Patentee after: Telefonaktiebolaget LM Ericsson (publ) Address before: Delaware Patentee before: Clastres LLC Effective date of registration: 20150427 Address after: Delaware Patentee after: Clastres LLC Address before: Stockholm Patentee before: Telefonaktiebolaget LM Ericsson |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20080806 Termination date: 20180329 |